Perhaps no performer has ever embodied the term "force of nature" than Ethel Merman, and no role has ever found a better use for her sui generis talents than that of mother Rose in Jule Styne, Stephen Sondheim and Arthur Laurents' "Gypsy." Now Billy Porter - another Broadway star described as a "force of nature" in "Kinky Boots" - lends his own stylish take on the perennial classic.